Remax USA Built-in microphone, you can enjoy hands-free call.There is a NFC function. Just touch the NFC place to connect to speaker quickly.Can regard as a FM radio, know about more news.HIFI sound, become addictive to the music.With a leather strap, easy to carry.Button control, adjust volume and switch song easily.Compatible with: Laptop,Mobile phone,MP3,PC,Tablet PC.Audio Source: Bluetooth Enabled Devices,Electronic Products with 3.5mm Plug